Unfortunately they may have passed the Rubicon with that. I suspect that many of the people (including me) who would have been willing to pay have already gone

Unfortunately they may have passed the Rubicon with that. I suspect that many of the people (including me) who would have been willing to pay have already gone ahead and signed up for another paid bookmarking site. The most active users are the ones who are most likely to have already heard about the shutdown, and the ones who would be most concerned about it. Just as well, since it looks like pinboard gets the things that bugged me about delicious right.